305252120 has 32 divisors (see below), whose sum is σ = 692236800. Its totient is φ = 121137408.

The previous prime is 305252039. The next prime is 305252137. The reversal of 305252120 is 21252503.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 305252092 and 305252101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24965 + ... + 35124.

It is an arithmetic number, because the mean of its divisors is an integer number (21632400).

Almost surely, 2^305252120 is an apocalyptic number.

It is an amenable number.

305252120 is an abundant number, since it is smaller than the sum of its proper divisors (386984680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305252120 is a wasteful number, since it uses less digits than its factorization.

305252120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60227 (or 60223 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 305252120 is about 17471.4658801144. The cubic root of 305252120 is about 673.3169739732.

The spelling of 305252120 in words is "three hundred five million, two hundred fifty-two thousand, one hundred twenty".